The increasing use of land due to development of technical infrastructure, transport and urban development areas necessitates the search for new non-hazardous areas. Decreasing mining activity and mining closure give opportunity to reclaim lands that were previously unavailable due to mining activity. The reclamation of post-mining areas may cause reactivation of shallow historical mining, resulting in discontinuous deformations on the surface. Low reliability of existing solutions makes it advisable to create a new model of description discontinuous deformation occurring on the terrain surface.